The NS400R
was based on the NS500 factory works racers and was one of the largest
sized two stroke bikes built by Honda. It was also fitted with the latest
technology in it's time Pictured on the left is the limited edition Rothmans
colors model.

The engine
was a three cylinder 400cc liquid cooled two stroke engine that made 59
horsepower at 8,500 RPM for the Japanese market. Some people claim that
the export models of the NS400R made about 72 horsepower. Technology was
borrowed from the GP machines.

ATAC
( Auto-controlled Torque Amplification Chamber ) was designed for high
end power and a fat torque curve which made the bike much easier to ride
in town than previous two stoke motorcycles.

An interesting
fact about the meaning of NS in NS400R and perhaps the NSR as well. The
Japanese promo brochure on the right claims that the N stands for
Nickel and the S stands for Silicon-carbide. These are materials
used in the construction of the cylinders. So that is what the NS means.
Interesting !! Click here
or on the catalog for more about that and detailed pictures of this brochure.